Reaction catalyzed by ditrans,polycis-polyprenyl diphosphate synthase [(2E,6E)-farnesyl diphosphate specific] (2.5.1.87), trans,polycis-polyprenyl diphosphate synthase [(2Z,6E)-farnesyl diphosphate specific] (2.5.1.88)

		+	n		=	n		+
	(2E,6E)-farnesyl diphosphate	+		n isopentenyl diphosphate	=		n diphosphate	+		di-trans,poly-cis-polyprenyl diphosphate